Use correct unique_ptr types for document and array values

Author: acmorrow

src/bsoncxx/array/value.hpp

@@ -34,7 +34,7 @@ namespace array {
 class BSONCXX_API value {
    public:
     using deleter_type = void (*)(std::uint8_t*);
-    using unique_ptr_type = std::unique_ptr<uint8_t, deleter_type>;
+    using unique_ptr_type = std::unique_ptr<uint8_t[], deleter_type>;
 
     ///
     /// Constructs a value from a buffer.

src/bsoncxx/document/value.hpp

@@ -33,7 +33,7 @@ namespace document {
 class BSONCXX_API value {
    public:
     using deleter_type = void (*)(std::uint8_t*);
-    using unique_ptr_type = std::unique_ptr<uint8_t, deleter_type>;
+    using unique_ptr_type = std::unique_ptr<uint8_t[], deleter_type>;
 
     ///
     /// Constructs a value from a buffer.